Obviously, that is a korean style called.............Moo kwan..or....Moo Duk......something or other.Its not surprising at all that an Hesidic man may have leart this style in New York or Chicago and now is trying to pass it off an ancient Izrealit martial art

Other possibilities are that before WW2, Jews had emigrated to Manchuria to escape persecution and Nazism.There the Father must have come in contact with a Korean or Chinese martial artist who had thought him this style.

The rock lifting looked highly suspect. Abir looks like nothing more than TKD mixed with Kung Fu including the Chun. At 2:18 the footwork lookss very similar to Korean Taekkyon or Capoeira. Hilarious to watch, worthy of necro.